Qualitative studies on alpha-interferon-2b in prolonged continuous infusion regimes using gradient elution...

Area of Science:

• Oncology
• Pharmaceutical Sciences
• Biochemistry

Background:

• Home-based cancer treatment increasingly relies on continuous infusion chemotherapy delivered via ambulatory pumps.
• Stability of pre-filled medication syringes is critical for refrigerated storage (up to 14 days) and infusion at body temperature (37°C).

Purpose of the Study:

• To evaluate the stability of interferon alpha-2b infusion in polypropylene syringes under conditions relevant to home oncology care.
• To assess potential degradation or interconversion of interferon alpha-2b during simulated storage and infusion.

Main Methods:

• Interferon alpha-2b (3 mega units/6 ml) was stored in polypropylene syringes at 4°C.
• Stability was analyzed using qualitative gradient-elution high-performance liquid chromatography (HPLC).
• Samples were tested after 14 days of refrigerated storage and 24 hours at 37°C.

Main Results:

• Chromatographic changes were observed in interferon alpha-2b infusions after 14 days at 4°C and 24 hours at 37°C.
• These changes suggest interconversion between interferon monomers and potential formation of oligomers.
• The observed instability raises concerns about the drug's integrity for continuous infusion.

Conclusions:

• Interferon alpha-2b in polypropylene syringes exhibits instability under simulated home chemotherapy conditions.
• The drug is currently considered unsuitable for inclusion in the home oncology program pending further investigation.
• Further studies are required to fully understand the degradation pathways and potential for stabilization.